A focused population profile of Extremadurans, their western Iberian background, closest modern genetic matches, ancestry model, and World Genetics G25 heatmap.
📍 RegionExtremadura, western Spain
🗣️ LanguageSpanish / Castilian
🧬 Closest matchPortuguese
Who are Extremadurans?
Extremadurans are people from Extremadura in western Spain, a region bordering Portugal and including areas such as Badajoz, Caceres, Merida, and the Guadiana and Tagus basins. Extremaduran history is tied to Roman Lusitania, medieval frontier zones, Castilian expansion, rural pastoral life, and migration to the Americas.
Spanish is the main language, with local Extremaduran speech traditions and Portuguese-border influences in some areas. Extremadura's position between Portugal, Castile, Andalusia, and western Iberia is visible in its closest genetic comparisons.
As a genetic reference, Spanish Extremadura Extremaduran is useful for comparison with Portuguese, Andalusian, Galician, Azorean Portuguese, Murcian, Castile and Leon, Castilla-La Mancha, and Valencian Alicante references.
What is Extremaduran DNA closest to?
In the World Genetics modern G25 table, Spanish Extremadura Extremaduran is closest to Portuguese, Spanish Andalusia Andalusian, Spanish Galicia Galician, Portuguese Azores, Spanish Murcia Murcian, Spanish Castile and Leon Castilian, Spanish Castile and Leon Leon Castilian, Spanish Valencia Alicante Valencian, Spanish Castilla-La Mancha Castilian, and Spanish Valencia Valencian. The result places Extremadura in a western Iberian space between Portugal, Galicia, Castile, Andalusia, and southern/eastern Spain.
Closest Matches
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Population
Distance
What does Extremaduran ancestry look like?
The ancestry breakdown gives deeper component proportions, while closest matches show modern similarity. Extremaduran is best interpreted as a western Iberian profile with strong Portuguese, Andalusian, Galician, Castilian, and Murcian context.
Ancestral Breakdown
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Where is Extremaduran DNA closest on the map?
The heatmap should emphasize Extremadura, Portugal, western Spain, Galicia, Castile and Leon, Andalusia, Murcia, and nearby Iberian regions.
Spanish Extremadura (Extremaduran) Genetic Distance HeatmapWarmer areas show closer modern population averages.
